Wire-rope shears



w. E. AND 0. E. WINTEMUTE.

WIRE ROPE SHEARS.

APPLICATION FILED JAN. 11. 1921.

Patented Apr. 18, 1922.

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WIRE-ROPE SHEARS/fi' V imagin To 'aZ'ZwhOm-it mag oonccrm 1 Be it known that we; WiLLsoN VVINTE- MUTE and CHARLES E. lVINTEMUTE, citizens of the Dominionof Ganada, residing at Vancouver, in the Provinceof British 00- lumbia, Canada, have invented certain new and useful Improvements in Wire-Rope Shears, of which the following is a specificationa v v v Thisinvention relates to amanually operated shearing machine for wire rope which has been particularly designed to be simple and relatively inexpensive in its first'cost' and effective in its operation.

The cutting of wire rope presents difiiculties in compactly holding together th individual wires of the rope'whilethe cutting is. being: effected. i v In the deviceywliich is'the-suhject of this application, the ropeiisefiectively supported in a wedgeeshaped notch which forms aistationary shearing blade and the other shear.- ing blade is mounted to be' movable about a centrewhich is eccentricwith the shearing edge of the'blade. r The rope'is tliusbythe shearing pre'ssure of the movable blade vforcibly.pressed-into the'taper of the notchfand the wires of the rope'areheld compactly together during the shearing action. .The' eccentric action of the movable-blade isalone ap'owerful and eifectiveone, and it is mounted around the centre of a'wheel segment to the periphery of which a powerful lever action is applied to rotate. the segment, and with'it the shearing blade. Thus, while the manual effort at the handle end oftlie lever may be relatively light, the shearing action: at the blade is a powerful one that readily cuts through the compacted wires of the rope.

The invention is particularly described in v the following specification, reference being made to the drawings by which itis accompanied, in which:

Sp eeification of liettersilatenti Fig. 1 1s a sectional elevation in part section of the device. w

Fig. 2, avertical section to an enlarged scale in a plane across thatof the shearing movement, and

Fig. 3 is a view of the further standard showing where it is cleared away to enable the rope to bepassed into the notch of the other standard. v The frame of the device comprises two are connected together at 4C. Adjacent the V a v Fasten-tea A r; 1-8;, 1922, f Application filed January. 11:, 1921. semi No; 436550; p r

base of the standards a wheelsector' 5: is rowhich passes through both side standards and 1s facedto fit snugly" between the'corresponding faces ofthe standards? itat'ably mounted between them one pin 6,

Adjacent the" pivot pin-"6 ai'taperedflnotch 7- v V is formed in one standard of theframe and the other" standard is cleared to afford access of a rope 20? to thenotclil V This notch extends angularly downwarduin slight curve: to; its smaller dimension immediately beneath the pin 6; Ontheinner faceof the nctchedstandard adjacent tlienotclr 7 and conformingwitlr the entire ,under'side of the notch andwith-a portion of; the upper side adjacent-the smaller. endgissecuredigthe 'fixed l v Q N shear bladeS:

- :The-hubofthewheel'sector eccentric withthe; pin i6 on which it is mount'ed', and

vonfthe face of thishub adjacent-the fixed shear bla'deiS is secured the? movable-shear f This movable'bla'deLQ is" circular andfcorresponds withethe eccentric hub of thewheelsector; Ithas'asegment removed as blade 9.

at 10 'to fit-against? a corresponding shoulder on. the face of the hub, 'and apertured for if thepin 6 to pass through'it; l

f Asthe wheel: sector 5 partially rotated on-its pin'6 theredge of the shear blade9being eccentric with? that pin: is" powerfully moved toward the-fixed blade 8 cr'ushing'the wire rope tightly into the smallerdimension of the notch 7 and'shearing its-compacted wire. 7

The wheel sector': may be I rotated any suitable means. Itis here shown as rotated by means of a pawl 11' pivotallyconnected torand strongly-mounted in one'end 12 of a handlelever, 13 mounted on a pin 14 secured between the upper endsof the stand;

ards 2, which pawl engages ratchet. teeth formed in the periphery of the wheel sector;

. The pawl lever is arranged to effect the cutting movement during downward 7 move.- mentfof the lever, so that there is little: tendency to disturb the'stability of the device on itsbase 3.

Pivotally mounted betweenthe upper ends of thestandards 2 adjacent the pawl lever, pin 14L is a check pawl 15 vdesigned to hold a the segments against backwardv 'rotation,.i

while the lever 12 is being lifted for another stroke. 7

This forms a simple and effective means of rotating the wheel sector but any simple or compound gearing may be used for this purpose without departing from the spirit of the invention, the substance of which is the use of an eccentric movable shear blade adapted to move against a fixed shear blade.

The shears is particularly efficient in its operation and the applied pressure to operate them being relatively light and clownwardly applied does not materially disturb the stability of the device, so that it requires no fastening to the floor. It is therefore readily portable to where it is required to be used.

Having now particularly described our invention, we hereby declare that what we claim as new and desire to be protected in by Letters Patent, is:

l. A wire rope shearing device, comprisin the combination with a suitable frame, of a shear blade rotatably mounted'therein, the shearing edge of which blade is eccentric to the axis of its movement, a fixed shearing blade secured to the frame, the shearing edge of which fixedv blade is substantially concentric with the axis of the movable blade, means for rotating the movable blade and provision in the frame to which the fixed blade is secured for arresting movement of the rope to be cut along the edge of the fixed blade and for crushing the rope against the shearing blade whereby its wires are compacted before being sheared.

2. A wire rope shearing device, comprising the combination with a suitable frame having standards upwardly projecting from its base, said standards apertured for a pin for a movable shear blade, one of said standards having a tapered notch the outer edge of which is substantially concentric with the pin aperture of the movable blade, the other standard being cut away to afford access of the rope to the notch, a shearing blade fixed to the inner face of the notched standard and conforming with the outer edge of the notch, an eccentric shear blade rotatably ards, and means for rotating the shear blade. V

3. A wire rope shearing device, comprising the combination with a frame having a base and two standards upwardly projecting from it, one of said standards having a tapered notch adapted to receive the various sizes of rope and the other standard being cut away to afford access of the rope to the notch, a shear blade secured to the notched standard and conforming generally to the shape of the notch, a sector rotatably mounted between the standards of the frame on a pin immediately over the smaller dimension of the notch, an eccentric shear blade secured to the hub of the sector and adapted to move in shearing relation to the blade on the standard, and means for rotating the sector.

a. A wire rope shearing device, comprising the combination with a frame having a base and two standards upwardly projecting from it, one of said standards having a tapered notch inclined downward and inward from one side edge and adapted to receive the various sizes of rope, the other standard being cut away to afford access of the rope to the notch, a shear blade secured to the inner side of the notched standard and conforming to the underside of the notch and the rim of the sector, and a check pawl pivotally mounted between the ends \of the standards and engaging the ratchet teeth of the sector.

In testimony whereof we aflix our signatures.

WILLSON EGERTAN WINTEMUTE. CHARLES ERNEST WINTEMUTE. 

